Using your research questions and research topic, identify your independent and dependent variables. Next, identify your research hypothesis and null hypothesis.

Example: Studying for longer periods of time can increase test scores. Independent variable is studying time. Dependant variable is test scores. Hypothesis: A longer studying period will result in higher test scores. The null hypothesis is that there will not be a significant difference between those who have studied for longer periods of time and those who have been studying for shorter.

Comment on Classmate 1’s post: Research question: How does parental involvement affect student academic achievement? Research hypothesis: Higher academic achievement is possible for students whose parents are involved more in education. Research hypothesis: Students whose parents have been more involved in education will achieve the same academic success as students who are not.

I believe Classmate 1’s research hypothesis and null hypothesis are appropriate for their research question. Their independent variable was parental involvement. The dependent variable was academic achievement. Both their null hypothesis and hypothesis address the research question. They provide clear descriptions of what they hope to find, and what they don’t expect to find.

Comment on Classmate 2’s post: Research question: Does exercise improve cognitive function? Research hypothesis: Exercise can improve cognitive function. It is not possible to prove that exercise will improve cognitive performance.

Classmate 2’s research hypothesis and null hypothesis are also appropriate for their research question. Their independent variable can be exercise while the dependent variable could be cognitive function. They are very clear about their hypothesis and null hypothesis, which clearly state what they hope to find and what they don’t expect to find. You might want to take into account the type of exercise they’re measuring and the potential confounding factors that could influence the results.

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